使用邦内尔脊柱侧凸测量仪在数字X线片上测量 Cobb 角：该方法的验证
Cobb angle measurements on digital radiographs using Bunnell scoliometer: Validation of the method.
作者信息
Tyrakowski Marcin, Czaprowski Dariusz, Szczodry Michal, Siemionow Kris
机构信息
Department of Orthopedics, Pediatric Orthopedics and Traumatology, The Centre of Postgraduate Medical Education in Warsaw, Otwock, Poland.
Department of Physiotherapy, Józef Rusiecki University College, Olsztyn, Poland.
出版信息
J Back Musculoskelet Rehabil. 2017;30(4):667-673. doi: 10.3233/BMR-150338.
BACKGROUND
Electronic rulers on computer screen are used to measure the Cobb angle (CA) instead of traditional methods with rulers, protractors and pens. The variety of software used to assess radiographs might make the CA measurements cumbersome in everyday clinical practice.
OBJECTIVE
The aim of the study was to verify the method of CA measurements on digital radiographs using Bunnell scoliometer (BS).
METHODS
Eighty patients with idiopathic scoliosis were enrolled into the study. CA of each curve was measured by use of Centricity software and BS. CA on 30 randomly chosen patients were measured 3 times by one researcher using only scoliometer. Three researchers measured CA on the same 30 radiographs using BS.
RESULTS
The mean CA of 224 curves measured by Centricity and BS were 29° ± 12.2° and 28° ± 11.7°, respectively. The ICC for agreement for 2 methods was 0.96 with SEM of 1.7°. Excellent intra- and interobserver reliability of CA measurements with scoliometer was noted: ICC of 0.96 with SEM of 1.4° and ICC of 0.93 with SEM of 1.9°, respectively.
CONCLUSIONS
The study revealed excellent reliability of CA measurements on digital radiographs using the BS. The proposed method of using the Bunnell scoliometer for CA measurements may be clinically useful.
背景
计算机屏幕上的电子标尺用于测量 Cobb 角（CA），而非使用传统的直尺、量角器和笔的方法。在日常临床实践中，用于评估 X 光片的软件种类繁多，这可能会使 Cobb 角测量变得繁琐。
目的
本研究的目的是验证使用 Bunnell 脊柱侧弯测量仪（BS）在数字 X 光片上测量 Cobb 角的方法。
方法
80 例特发性脊柱侧弯患者纳入本研究。每条曲线的 Cobb 角通过 Centricity 软件和 Bunnell 脊柱侧弯测量仪测量。一名研究人员仅使用脊柱侧弯测量仪对 30 例随机选择的患者的 Cobb 角进行 3 次测量。三名研究人员使用 Bunnell 脊柱侧弯测量仪对相同的 30 张 X 光片测量 Cobb 角。
结果
通过 Centricity 软件和 Bunnell 脊柱侧弯测量仪测量的 224 条曲线的平均 Cobb 角分别为 29°±12.2°和 28°±11.7°。两种方法一致性的组内相关系数（ICC）为 0.96，标准误（SEM）为 1.7°。使用脊柱侧弯测量仪测量 Cobb 角时，观察者内和观察者间的可靠性极佳：ICC 分别为 0.96，SEM 为 1.4°；ICC 为 0.93，SEM 为 1.9°。
结论
本研究显示使用 Bunnell 脊柱侧弯测量仪在数字 X 光片上测量 Cobb 角具有极佳的可靠性。所提出的使用 Bunnell 脊柱侧弯测量仪测量 Cobb 角的方法可能具有临床实用性。
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